Not counting the huge number of random patrols who loved to hunt me down in my earlier institute run. Ideologically i strongly support the Institute, but having to fight armored tank armed with big guns and who love to travel in squad seem a lot dangerous. After reading about the changes in the new survival mode and viewing some let's play to see how it work in practice, i finally nailed the build i will try for it, but i am still not sure about which main faction to join to get the best advantage/give a easier advantage to survive.